python 删除字符串中的连续空格只保留一个

Question

python 中如何删除字符串连续的空格，只保留一个呢？

Answer 1

Is this okay?

s = "abc  def   ghi       xy"
print ' '.join(filter(lambda x: x, s.split(' ')))

@felix021 in the comment, yes, there is no need to filter out the '' empty string, just connect it directly:

 ' '.join(s.split())

Answer 2

Use regular expressions:

import re
re.sub(r'\s+', ' ', 'dfadf   dfa  ds ')

Answer 3

Last regular rule (it is said that this is considered an abuse of regular rules)

import re
re.sub(' +', ' ', s)